Abstract: The present invention relates to a device and a method for chemical looping combustion, for which the end of the intake duct (4) opening out within the chamber of the separator (1) is inclined with respect to a horizontal plane (H).

Abstract: The invention relates to a CLC plant for the combustion of solid hydrocarbon feedstocks generating particles of unburnt residues, comprising a solid/solid separator above the combustion reactor in order to efficiently separate the particles of the oxygen-carrying solid from the particles of unburnt residues contained in the gas/solid mixture (14) exiting from the combustion reactor. The chamber (1) of the solid/solid separator, the combustion reactor and the inlet (2) for the gas/solid mixture (14) of the chamber have a parallelepiped shape. The inlet (2) is equipped at its top with means (3) for distribution of said gas/solid mixture in the chamber which extend over the entire length of the inlet, improving the solid/solid separation.

Abstract: The invention relates to an oxygen carrier solid, its preparation and its use in a method of combustion of a hydrocarbon feedstock by active mass chemical-looping oxidation-reduction, i.e. chemical-looping combustion (CLC). The solid, which is in the form of particles, comprises an oxidation-reduction active mass composed of metal oxide(s) dispersed in a ceramic matrix comprising at least one oxide with a melting point higher than 1500° C., such as alumina, and has, initially, a specific macroporous texture. The oxygen carrier solid is prepared from an aqueous suspension containing precursor oxide grains for the ceramic matrix that have a specific size, by a spray-drying technique.

Abstract: The present invention relates to the conversion of a carbon source into acetyl phosphate with increased carbon yield. In particular, the invention provides metabolically engineered micro-organisms capable of producing acetyl phosphate from a carbon source with increased carbon yield, which micro-organisms have been transformed with at least one exogenous nucleic acid encoding a phosphoketolase having sedoheptulose-7-phosphate phosphoketolase activity and which are further genetically modified to have eliminated transketolase activity. The invention also provides methods for the production of chemicals using said micro-organisms.

Abstract: The present invention concerns a process for the treatment of a feed comprising biomass, said process comprising at least the following steps: a) a step for drying said feed at a temperature in the range 20° C. to 180° C. for a period in the range 5 to 180 minutes, b) a step for torrefaction of the dried feed obtained from step a) in order to produce at least one solid torrefied biomass effluent, and c) a step for co-grinding the solid torrefied biomass effluent obtained from step b) in the presence of a second biomass feed in order to obtain a powder.

Abstract: The invention relates to an injection device (10) for atomizing a liquid into droplets using a gas, comprising a hollow tubular body (12) having a longitudinal direction (X). An inner wall (13) defines a first region, referred to as contact region (Z1), and a second region (Z2). The body includes: —at least two inlet ports (14; 16) for injecting liquid and an inlet port for injecting gas, all of said ports extending to the first region (Z1); —at least one outlet port (18), located downstream of the first and second regions, for discharging the atomized liquid. The body (12) has an inner cross-section that varies continuously or constantly over the entire length thereof. Between regions (Z1) and (Z2), the inner wall (13) includes at least one baffle (261) which is shaped such that in each plane running perpendicularly to the longitudinal direction of the body containing said baffle, the baffle reduces an inner cross-section of the body over the entire periphery of the inner wall (13).

Abstract: Embodiments of an injection device shaped in order to atomize a liquid into droplets by means of a gas are disclosed herein. The injection device may comprise a body having a gas inlet orifice intended to be connected to a gas supply duct. The injection device may further comprise an outlet orifice for discharging the atomized liquid. The injection device may also comprise a straight internal duct connecting the inlet orifice to the outlet orifice along an axial direction of said body. At least two liquid inlet ducts may be intended to be connected to at least one liquid supply duct pass through said body radially or substantially radially and open into said internal duct. These liquid inlet ducts may each have an axis and are arranged so that their axes intersect at one and the same point on an axial line extending inside the internal duct.

Abstract: The invention relates to a process for the positioning of a corrosion-resistant coating on an internal or external metal wall (20) of a fluid catalytic cracking unit chamber, comprising: (i) the shaping of a metal anchoring structure (10) formed from a plurality of strips (12) assembled in pairs by joining assembly portions (121, 122) so as to form a plurality of cells (14), the anchoring structure comprising a plurality of fastening tabs (16) integral with strip portions other than assembly portions, (ii) the fastening of said anchoring structure (10) by welding the free edge (18) of a part at least of the fastening tabs to the metal wall (20), defining a space between a longitudinal edge (12b) of an anchoring structure and the metal wall, (iii) the insertion of a composite material into the cells (14) from the metal wall (20) and at least up to the upper longitudinal edge (12a) of each strip.

Abstract: Process for the treatment of a feedstock containing biomass, the process including a) drying the feedstock at a temperature between 20 and 180° C. for a duration between 5 and 180 minutes, b) torrefaction of the feedstock originating from step a) in order to produce at least one torrefied biomass solid effluent, c) co-grinding the torrefied biomass solid effluent originating from step b), in the presence of at least one solid fossil feedstock in order to obtain a powder.

Abstract: The invention relates to an injection device (10) for atomizing a liquid into droplets using a gas, comprising a hollow tubular body (12) having a longitudinal direction (X). An inner wall (13) defines a first region, referred to as contact region (Z1), and a second region (Z2). The body (12) has an inner cross-section that varies continuously or constantly over the entire length thereof except at the junction between the first and second regions, where the inner wall (13) of the body includes at least one cavity (201) which increases the size of the inner cross-section of the body, said at least one cavity extending over a predefined length in the longitudinal direction.

Abstract: The invention relates to a support device for a rigid chain (401) composed of links (402) that are connected in pairs by rollers (403). The movement of the rigid chain is guided by an internal housing (406) of a support casing (405). One or more support pins (404) project from one side of the chain, parallel to the axis of the link rollers. Furthermore, a face (411) of the casing extending substantially perpendicularly to the axes of the rollers has a through-groove (412) communicating with the internal housing (406). This groove (412) extends along the entire length of the housing and has dimensions, in a plane perpendicular to the axes of the rollers (403), that are sufficient to allow through only the support pin(s) (404), which pass through the groove (412) and protrude from the support casing (405) by a predetermined length allowing the fastening of one or more functional elements.

Abstract: An injection device is described herein, which is configured to atomize a liquid into droplets using a gas. The injection device has a body with walls defining a recess, a liquid inlet orifice being formed laterally in the walls, and a gas injection assembly in which there is formed a passage for the circulation of gas between a gas inlet orifice at one end of the recess and a gas outlet orifice situated inside the recess. The assembly defines, with the walls of the body, a space for the circulation of liquid from the liquid inlet orifice to the constriction. The walls of the body define a constriction having a throat, downstream of the gas outlet orifice, and the injection device is arranged in such a way that the stream of gas at the outlet orifice covers a wall portion in close proximity to the throat.

Abstract: The application generally relates to chloroplast targeting of nuclear-encoded proteins of interest in microalgae. Provided herein are expression cassettes comprising a nucleotide sequence encoding a chloroplast targeting peptide operably linked to a nucleotide sequence encoding a protein of interest, wherein said chloroplast targeting peptide comprises the bipartite targeting sequence of the phosphoribulokinase of Nannochloropsis gaditana (NgPRK BTS). The invention further provides vectors comprising the expression cassettes, and microalgae having stably incorporated or transiently expressed into their nuclear genomes an expression cassette described above. Methods are also provided for the production of a protein of interest in the chloroplast of a microalga, as well as methods for modulating chloroplast pathways.

Abstract: The present invention relates to biocatalysts catalyzing the formation of ?-olefins. In particular, the invention provides polypeptides with improved decarboxylase activity on C10-C16 free fatty acids, more particularly on C10 or C12 free fatty acids, as compared to the P450 fatty acid decarboxylase isolated from the Staphylococcus massiliensis strain S46 (Sm46). The invention further provides recombinant nucleic acids and vectors comprising the coding sequences encoding these polypeptides, genetically engineered host cells expressing said polypeptides and methods for the production of C9-C15 ?-olefins, more particularly C9 or C11 ?-olefins, using said polypeptides or said host cells.

Abstract: The present invention concerns a process for the treatment of a feed comprising biomass, said process comprising at least the following steps: a) a step for drying said feed at a temperature in the range 20° C. to 180° C. for a period in the range 5 to 180 minutes, b) a step for torrefaction of the dried feed obtained from step a) in order to produce at least one solid torrefied biomass effluent, and c) a step for co-grinding the solid torrefied biomass effluent obtained from step b) in the presence of a second biomass feed in order to obtain a powder.

Abstract: The invention relates to an oxygen carrier solid, its preparation and its use in a method of combustion of a hydrocarbon feedstock by active mass chemical-looping oxidation-reduction, i.e. chemical-looping combustion (CLC). The solid, which is in the form of particles, comprises an oxidation-reduction active mass composed of metal oxide(s) dispersed in a ceramic matrix comprising at least at least one feldspar or feldspathoid with a melting point higher than 1500° C., such as celsian, and has, initially, a specific macroporous texture. The oxygen carrier solid is prepared from a precursor of the ceramic matrix, obtained from a macroporous zeolitic material with zeolite crystals of a specific size, and a precursor of the oxidation-reduction active mass.

Abstract: The invention relates to a metal anchoring mesh intended to be secured to a metal wall of a chamber of a fluid catalytic cracking unit, in order to form cells (64). Said metal anchoring mesh comprises a plurality of wavy elementary parts (12, 14) connected successively together, forming cylindrical surfaces that are able to respectively define said cells, said cylindrical surfaces each having a central axis of symmetry A, the wavy elementary parts (12,14) each having protruding tongues (42?, 44?), said protruding tongues being able to extend respectively inside said cells (64). Said tongues (42?, 44?) extend along a length less than a quarter of the distance d that extends between said cylindrical surface and said central axis of symmetry A of said cylindrical surface.

Abstract: The present invention discloses a process for the catalytic cracking of a weakly coking feedstock having a Conradson carbon residue of 0.1% by weight and a hydrogen content of greater than 12.7% by weight, comprising at least a feedstock cracking zone, a zone for separating/stripping the effluents from the coked catalyst particles and a zone for regenerating said particles, characterized in that at least a solid carbon material in the fluidized state, having a carbon content equal to or greater than 80% by weight, is injected upstream of and/or during the catalyst regeneration step into a dense bed of coked catalyst.

Abstract: The invention relates to a feedstock injector (2?) for injecting an atomized hydrocarbon feedstock into a tubular-type reactor with substantially upward or downward flow that is intended to be used in a fluid catalytic cracking unit, having: at least one hollow cylindrical body (41); at least a first and a second inlet openings (40, 42) for respectively injecting a liquid hydrocarbon feedstock to be cracked and an atomizing gas into said cylindrical body (41); at least one contact chamber (46) arranged inside said hollow cylindrical body, in which said liquid hydrocarbon feedstock to be cracked and said atomizing gas are intended to be brought into contact in order to atomize said liquid hydrocarbon feedstock to be cracked; and at least one outlet opening (44) that opens on the inside of said reactor in order to eject said liquid hydrocarbon feedstock thus atomized. According to the invention, each element of the injector (2?) is formed of a ceramic material.

Abstract: The invention relates to a gas injection element (10) for a system for distributing as gas inside a chamber of a fluid catalytic cracking unit. This injection element comprises a passage (14) passing right through it in a longitudinal direction (X), and —a metallic internal element (20) of which an internal surface (22) defines part of the through-passage (14) passing through in a longitudinal direction (X), —a hollow metal sleeve (30) accepting one end (20a) of the internal element (20) and attached thereto, —a hollow metal support (40) having an internal surface (42) defining the remainder of the through-passage passing through in the longitudinal direction (X), the said sleeve also being attached to one end of the support (40).